Ingot-stripper.



D. KENDALL:

INGOT STRIPPER.

APPLICATION FILED MAR.2|, 191a.

Patented Dec. 17, 1918.

3 SHEETS-SHEET I.

D. KENDALL.

INGOT STRIPPER. AFPUCATIQN FILED MAR. 2|, [SH 3. 1,288,023.. PatentedDec. 17,1918.

3 SHEETS-*SHEET 2- F' "*'1 D. KENDALL.

INGOT STRIPPER.

APPLICATION FILED MAR.2|, 191s.

Patented Dec. 17, 1918.

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I the parts indifferent ITED STATES PATENT OFFICE.

DAVID KENDALL, 0F ALLIANCE, OHIO, ASSIGNOR TO THE ALLIANCE MACHINECOMPANY, OF ALLIANCE, OHIO, A CORPORATION OF OHIO.

INGOT'STRIPIPER.

Specification of Letters-Patent.

Patented Dec. 17, 1918.

Application filed March 21, 1918. Serial No. 223,738.

To all whom it may concern:

Be it known that I, DAVID KENDALL, a resident of Alliance, in the countyof Stark and State of Ohio, have invented a new and useful Improvementin Ingot-Strippers, of which the following is a full, clear, and eX- actdescription, reference being had to the accompanying drawings, formingpart of this specification, in which Figure 1 is a sectional sideelevation of an ingot stripper embodying my invention;

Figs. 2 and 3 are sectional end views with position s'in the twofigures; and

Fig. lvis a detail view.

My invention hasrelation to ingot strippers, and more. particularly tostrippers which are designed for use in stripping What are known aslarge-top ingots, that is to say, ingots whichhave a greater crosssectional area at the upper portion of the mold than at the lowerportion. In strip:

. ping ingots of this character, it is necessary that the ingots shallbe stripped by pushing them endwise through the top of the mold. Myinvention is designed to provide a simple, powerful and eflicientstripper for this purpose.

A further object of my invention is to provide a stripper of thischaracter in which the gripping devices for holding the mold during thestripping are of such character as to readily adjust themselves to anyinequalities in the mold lugs; will have a secure and powerful grip uponthe mold; and will release to an open position, such as to permit themold to be subsequently removed from the stripper. e

The nature of my invention will be best understood by reference to theaccompanying drawings, in which I have shown the preferred embodimentthereof, and which will now be described, it being premised however,that various changes may be made in the details of construction,arrangement and combination of the parts, without departing from thespirit and scope of my invention as defined in the appended claims.

In these drawings, the numeral 2 designates the stripping platformsupported by a suitable framework 3, which preferably extends downwardlywithin a pit 4, in order to bring the platform at a convenient level.The upper surface of this platform is provided with suitable centeringlugs 5 for the molds.

The numeral 6 designates a transversely arranged cross head whichcarries the up- Wardlyextending plunger or bull-nose 7, which is adaptedto be moved upwardly through the opening 8 in the platform 2, and intothe mold A, containing the ingot B to be stripped. This cross head isarranged to slide on the vertical rods 9, having suitable nuts or heads10 at their lower ends, and each of which is connected at its upper endby a link 11, with a lever-12. The two levers 12 are pivoted to turnabout the fixed centers 13 at opposite sides of the opening 8. Pivotedto the oppositearm of each lever 12 from that to which the link 11 isconnected is a gripper 14, which is adapted to be engaged with a lug aon the ingot mold A. Each gripper 14 has an extension 15, below itspivotal axis 16. v

The numeral 17 designates a sheave block, which is suspended from theextension 15 of each gripper. In the particular apparatus shown, eachsheave block has mounted therein three sheaves 18. There are twocorresponding sets of sheaves 19, journaled to the cross head 6 atopposite sides of the plunger or bull-nose 7. Each of the levers I 13has a lug or projection 20,'which is ar-' ranged to engage acorresponding lug or projection 21 on the adjacent gripper.

The numeral 22 designates a winding drum driven by a motor 23, throughthe gearing 24. 25 is a rope or cable which is connected at one end toone end portion of the drum 22, passing thence downwardly and over thetwo sets of sheaves at that side of the stripper. thence around an idleshaft or pulley 26. journaled to the central portion of the cross head6. thence upwardly and around the other two sets of sheaves 18 and 19,its other end portion being connected to the opposite end portion of thedrum 22.

The operation is as follows:

- The ingot molds to be stripped are brought to a pointadjacent to thestripper either on an ingot car or by any other suit- 1 of the parts,the entire weight of the cross open positions.

head 6 and of the plunger or bull nose 7 rests upon the nuts 10, at'thelower end of the rods 9, thus holding the grippers in their The motor 23is now actuated to avind the rope or cable 25 on the drum 22. As soon asthis Winding operation commences, the Weight of and plunger istransferred from the rods 9 to the upper sheave blocks 17, and fromthence to the inner arms of the levers 12. This will at once move saidlevers from the position shoivn-in-Fig. 3 "to the position shown in Fig.2, swinging the grippersinvvardly against the sides or" the ingot mold.As the Winding operation continues, the grippers are drawn down in asubstantially straight line until they engage the ingot mold lugs, a. llhile the grippers are thus being closed, the plunger or bull-nose 7 ismoving,upwardly, and as the operation con tinues," the upper end or" theplunger con tacts With the ingot thereinand pushes said ingot partiallyoutof the mold, shown inj dotted lines Fig. The ingot-can he held inthis position inserting a suitable edge .0 between the ingot and themold Wall, as also shown in said figure.

' Theniotor 23 is then reversed, slacking the 'i-*ope-or'eable 25, untilthe cross head 6 is again lowered into'contaetiwith the nuts 10, whenthe Weight is again thrown upon the rods 9. This acts upon theouter-arms of the levers 12 to move them to the position shown in Fig.3, and asthe'y move-to such positions,:the lugs'QO thereon engage thelugs 21 on the grippers, and thereby positively force the grippers tomove outwardly to their open position.

The ingot and mold can then be, removed, and the parts are ready tor"the next strip ping operation. It .Will' be readily understood thatvery powerful stripping action is, eXerted, inasmuch as the Windingofthe ropes or cables upon the drum .22 gives a nearly direct up- Wardpull upon the plunger or bull-nose, While at the same time there is adown pull in direct lines upon" the grippers, causing them to exert asecure holding engagement on the molds. v I i By reason of the manner inwhich the rope or cable is arranged, it will be readily seen that thegrippers will adjust themselves to considerable variations in thepositions and height of the'lugs n," Thus, if one of these lugs shouldhave its upper surface at a considerably higher point'than the other.the grippers will adjust themselves accordingly ithin comparatively,vvide limits.

Inasmuch as the rope or cable is subjected to heavy strains and 'Wearwhere'it passes around the idler sheave,l preferably cut. it at itscenter and overlap the cut end portions in the manner shownin Fig. i,securing these end portions therunning parts which passes around thecross head naeaoes of the rope by suitable clamps 2'7. In this manner,that portion or therope'br cable the sheave 26 is suitably reinforced. 7'1 It will be seen that-in the operation of the stripper, the Weight ofthe cross head and plunger is alternately transferred from the rods 9Where it acts to open the grippers, to

the sheave or blocks 17, Where itacitf to does such grippers. lf'hismode of operation permits or" a very simple arrangement of the parts foropeningand closing the grippers.

The. parts ean be made of greatstrength and are not likely to becomeinjured or. broken in service; 4

it will ofeourse be understood that any suitable means may be employedfor Wind} ing and unwinding the rope or cable,;that di'fierent systemsof sheaves 'or pulleysniay be used, and that various other changes maybe made Within the scope. of the appended claims. r A.

1 An ingot stripp or arge top ingo scomprising an upwardlyacting-stripping plunger arranged to engage vthe lower end system ofsheaves or pulleys mounted on the v;

carrier, pivotal mold grippers, another syn; tem of sheaves or pulleyssuspended from said grippers, a winding drum, a rope or cable connectedto said drum andengaging the systems of sheaves or pulleys, andconnections whereby the Weight of the; plunger and its'carrier may bemade to act upon the grippers for efiecting a releasing'movementthereof, or may be caused to act upon the grippers to effect an engagingmovement thereon, substantially as described.

3. An ingot stripper for large top ingots,

comprising an upwardly acting movable plunger arranged to engage thelower end ofan ingot and push it upwardly through the opposite end of amold, acarrier there for, oppositely arranged pivoted grippers arra g d,t i gag opp s sides of an ingot mold, means for actuating the plungertiens whereby the movemen of th a ier in one direction Will effect anengaging movement of the grippers and a reverse movement of said carrierwill eflt'eeta releasto cause it to engage an ingot, and connee ing' m mo sai grippers, s bstan-' tially as described;

4. An ingot-stripping apparatus for large top ingots, comprising asuitable support tor the ingotlmoldj ingot a; plunge movable throughsaid support and adapted to engage the smaller end of the ingot, a

carrier for said plunger, oppositely arranged pivotal grippers forengaging the ingot mold, a set of sheaves suspended from each of saidgrippers, other sets of sheaves on said carrier, a rope 01' cableengaging the sets of sheaves, a winding drum to which the rope or cableis connected, and connections adapted to be engaged by said carrier andthereby effect a releasing movement of the grippers, substantially asdescribed.

5. Ingot-stripping apparatus for large top ingots, comprising a pair ofoppositely arranged mold grippers, levers to which said grippers arepivoted, a set of sheaves suspended from each of said levers, astripping plunger, a carrier therefor having two sets of sheavesthereon, a rope or cable engaging the several sets of sheaves, a winding drum for the rope or cable, and connections depending from saidlevers and adapted to be engaged by said carrier for effecting areleasing movement of the grippers, substantially as described. 1

6. Ingot-stripping apparatus for large top ingots, comprising twooppositely arranged mold grippers, lever members to which said grippersare respectively pivoted, a stripping plunger actuating mecha nism forthe plunger, and means whereby the weight of the plunger may be causedto act upon opposite end portions of said levers to thereby respectivelyeffect the engaging and releasing movements thereof, substantially asdescribed.

7 Ingot-stripping apparatus for large top ingots, comprising avertically movable plunger, a cross head carrying said plunger,oppositely arranged mold grippers, levers to which said mold grippersare respectively pivoted, and actuating mechanism for the plunger,comprising a flexible member operatively engaged with both the plungerand the grippers, and rods connected to said levers and adapted to beengaged by said cross head, substantially as described.

8. Ingot-stripping apparatus for large top ingots, comprising avertically movable plunger, a cross head carrying said plunger,oppositely arranged mold grippers, levers to which the mold grippers arerespectively pivoted, a set of sheaves connected to each of the moldgrippers, two other sets of sheaves mounted on the cross head, a windingdrum, a rope or cable connected to the winding drum and engaging theseveral sets of sheaves, and rods connected to said sheaves anddepending therefrom, said rods having heads at their lower ends adaptedto be engaged-by the cross head, substantially as described.

9. Ingot-strippi ng apparatus for large top 1ng0ts,"com pr1sing avertically movable plunger, a cross head carrying said plunger,oppositely arranged mold grippers, levers to which the mold grippers arerespectivel pivotedfa set of sheaves connected to eac of the mold irippers, two other sets of sheaves mounte on the cross head, a windingdrum, a rope or cable connected to the winding drum and engaging theseveral sets of sheaves, and rods connected to said sheaves anddepending therefrom, said rods having heads at their lower ends adaptedto be engaged'by the cross head, the intermediate portion of the rope orcable between the two pairs of upper and lower sheaves being engagedwith an idler pulley or sheave on said cross head, substantially asdescribed.

In testimony whereof, I have hereunto set m hand.

y DAVID KENDALL.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G."

